Automatic lock slider



Se t. 5, 1939. L. H. MORIN ET AL AUTOMATI C LOCK SLIDER Filed May 20, 1938 INVENTOR [00/5 A. Mafia/v BY 4146 MAR/46K) ATTORNEY Patented Sept. '5, 1939 UNITED 'STAT AUTOMATIC LOCK SLIDER Louis B, Morin N. Y., assignors ration, Bronx, N. Y., York and Davis Marinsky, Bronx, to Whitehall Patents Corpoa corporation of New Application May 20, 1938, Serial No. 208,979 8 Claims. 24 -205) This invention relates'to sliders of separable fasteners and primarily to devices of this kind wherein the body portion or structure of the slider is composed of plastic material, and particularly thermoplastic material, such for example as cellulose acetate, whereby the body portion or parts of the slider may be formed from die castings. More particularly the inve'ntionrelates to a slider device of the character described having pawl or latching means normally held in operative position when the slider is at rest and automatically moved into inoperative position to release the slider in the operation of drawing or pulling the slider, by suitable finger piece or pull, in

either direction on the fastener stringers. The

novel features of the invention will be best understood from the following description and annexed drawing in which certain embodiments of the invention: are disclosed and in which the separate parts are designated by suitable reference'characters in each of the'views, and in which:

Fig. 1 isa plan view of one form of slider which we employ illustrating the arrangement thereof on portions of fastener stringers with part of the structure removed.

Fig. 2 is a longitudinal sectional view through the slider detached. Fig. 3 is a cross section on the line,3--3 of Fig. 1.

Fig. 4 is a cross section on the line 4-4 of Fig. 2. I

Fig. 5 is a diagrammatic perspective view illustrating the arrangement of the pawl or latching member with respect to the pull and eliminating the entire slider body structure.

' Fig. 6 is a plan view of the slider body detached.

so 16, [6a, note Fig.

Fig. 7 is a view similar to Fig. 2 showing a modified form of construction.

Fig. 8 is a section substantially on the line 1.-'I of Fig. 6, and

Fig. 9 is a perspective view of the pawl or latching element employed in the structure shown in Figs. 6 and '7 and on an enlarged scale.

In Figs. 1 to 6 inclusive is shown one form of slider construction employing a slider body Ill 45 consisting of top and bottom walls II and I2 joined at the wide end of the slider in a conventional V-shaped web l3. The side edges of the walls H and I2 have inturned flanges M for engaging the links I5, I51! of opposed stringers 1, in the operation of coupling and uncoupling the same in the manner well known in this art.

While in the accompanying drawing we have shown the retaining bar l1 as constructed from plastic maelongated recess 18 support the unit 23 slider body as well as a finger piece;

terial and particularly die cast thermoplastic material, such for example as cellulose acetate, it

will be understood that these parts may be constructed from other materials including metal castings, in which latter event, the parts In and 5 Il may be secured together in other known manners. In forming the parts l0 and ll of thermoplastic die castings, this process lends itself to the economic formation of the parts, and at the same time contrastic color effects may be pro- 10 duced between the parts I!) and I! by using different colored materials therein. Y

The slider body or part III is formedwith'an in the outer surface of thetop wall It at one side of the longitudinal center thereof, one end of the recess l8 opening into a large key recess l9 for receiving a corresponding key member 20 on the part 11. A recess 2| is formed centrally of the other wide end of the slider body Hi to receive a key member '22 on 0 the part ll in the operation of cementing the part H to the part ID.

We provide a pawl, latch or look unit 23, shown in detail in Fig. 5 of the drawing, and this unit has spaced shaft portions 24, 24a arranged in 26 commonalinement. A crank portion 25 has an upwardly arched part 26 having two beveled cam surfaces 21 and 28 at the underside thereof. The crank portion 25 joins the spaced shaft portions 24, 24a, and extending laterally from the shaft 30 portion 24a is a pawl or latching element proper 29 in the form of a downwardly extending hook. The upper surface of said element is recessed as seen at 30 to receive a coil spring 3! which serves to urge the pawl normally in a downward direc- 35 tion or into an operative position.

The recess l8 forms a seat or bearing for the shaft portions 24, 24a. Extending from the recess 18 are hook-shaped recesses 32 for receiving the arms of the crank 25 and part of the 40 crosshead 26 thereof, whereas another recess 33 extends from the recess l8 and opens into an aperture 34- passing through the top wall ll of the slider. The recess 33 and aperture 34 receives the element 29, the aperture 34 permitting the hook end of the pawl to pass into the channel of the slider to engage the links of one 'of the stringers, for example the links ii of the stringer. I5, note Fig. 1.

32 and 33 serve to normally in what might be termeda horizontal position with the hook end of the 'element 29 extending into the channel of the slider, as seen in full lines in Fig. 3 of the drawing. The

The recesses 18.

unit is held in this position by the spring 3|. By 5 W n we will 39 Wt Will Willi it, it

of the crank 25 or the arched crosshead 26 thereof when a finger piece or pull ii an thereof is millet m it or the crosshead in ection. ul; still if it we 1* ,11/ I01 m ll! l {WW l WOW pa am f l u (Mil/[H175 006 0] H" I;

sockets or recesses 52 formed in the upper surface of the slider dl. One of these sockets is shown in section in Fig. 8 of the drawing.

It will be noted that sumcient clearance is provided to permit the movement of the unit 23a 5 from the operative position shown in Fig. 8 to a raised or inoperative position to draw the hookshaped pawl or lock element 53 out of the channel of the slider as will be apparent. The element 53 is arranged at one end of the unit 231; m

and at one side lhtltOI (it will clearly appear will ill/ll W M W l a; all

& YE limit n ll ii i point of reducing the overall dimensions of the entire unit 23.

With both forms of construction, it will appear that in assembling the parts, the pull ring or yoke til-$8 is first arranged upon the upper surface of the slider, after which the unit ISL-23a is arranged in position. The spring iii-51 is then placed in position, after which the bar part or member "-42 is applied and cemented in position. The parts are held in assembled position a sufficient length of time to insure the secure cementing ofthe parts together.

One of the features of the construction of the device herein shown and described, resides in the fact that movement of the automatically locked slider in either direction is positively prevented except when the slider is made freely movable and operable in either direction on the fastener stringers by drawing .upon the finger piece or pull in any direction throughout an arc of 180, and thereby releasing the locking member. In both forms of construction the lock element or pawl moves in a plane transversely to thelongitudinal plane of the slider so that-when said element is in locked'position, the same forms what may be termed a wedge or perpendicular shoulder which positively stops the feed of the links through the channel of the slider, and this prevents movement of the slider on the stringers. It is here important to note that no pressure upon the pawl or look element will tend to move the same into inoperative position primarily due to the transverse plane of movement of said element.

Having fully described our invention, what we claim as new and Patent, is: I

1. In a lock slider for separable fasteners comprising diverging channels for the passage of fastening elements, an elongated locking member mounted on an outer surface of a' wall of the slider and comprising two spaced shaft portions in line with each other and joined-by a crank portion, means pivotally supporting said shaft portions on said wall, said shaft portions extending lengthwise of the slider, a latch extending from said locking member and through a hole in the slider into one of said channels to lock the slider, and a handle connected to said crank'and arranged to rock said member to lift said latch from looking position.

2. In a lock slider for separable fasteners comprising diverging channels for the passage of fastening elements, an elongated locking member mounted on an outer surface of a wall of the slider and comprising two spaced shaft portions in line with each other and joined by a crank portion, means pivotally supporting said shaft portions on said wall, said shaft portions extending lengthwise of the slider, a' latch extending from said locking member and through a hole in the slider into one of said channels to lock the slider, a handle connected to said crank and arranged to rock said member to lift said latch from looking position, and a spring normally urging said latch into locking position. I

3. In a lock slider for separable fasteners comprising diverging channels for the passage of fastening elements, an elongated locking member mounted on an outer surface of'a wall of the slider and comprising tions in line with each other and joined by a crank portion, means pivotally supporting said shaft portions on said w'all, a latch extending from said locking member and through a hole desire to secure by Letters elements, means normally urging locked position,

two spaced shaft pormajor portion of said member and retaining the in the slider into one of said channels to lock the slider, and a handle connected .to said crank and arranged to rock said member to lift said latch from looking position.

4. In a lock slider for separable fasteners comprising diverging channels for the passage ,of fastening elements, an elongated locking member mounted on an outer surface of a wall of the slider and comprising two spaced shaft portions in line with each other and joined by a crank portion, means pivotally supporting said shaft portions on said wall, a latch extending from said lockingmember and through a hole in the slider into one of said channels to lock the slider, a handle connected to said crank and arranged to rock said member to lift said latch from looking position, and a spring normally urging said latch into locking position.

5. In a lock slider for separable fasteners comprising diverging channels for the passage of fastening elements, an elongated locking member mounted on an outer surface of a wall of the slider and comprising two, spaced shaft portions in line with each other and joined by a crank portion, means pivotally supporting said shaft portions on said wall, a latch extending from said locking member and through a hole in the slider into one of said channels to lock the slider, a cam surface on the under side of said crank portion and inclined towards said wall of the slider, and a handle having a crosshead disposed between said crank portion and said wall and slidable lengthwise of the locking member to engage said cam to lift said latch from looking I fastening elements, an elongated locking member mounted on an outer surface of a wall of the slider and comprising two spaced shaft portions in line with each other and joined by a crank portion, means pivotally supporting said shaft portions on said wall, a latch extending from said locking member and through a hole in the slider into one of said channels to lock the slider, cam surfaces at opposite ends of said crank portion and extending towards said wall, and a handle having a crosshead disposed between said crank portion and said wall of the slider and slidable lengthwise of the locking member so that it may engage either one of said cam surfaces to rock the locking member and to lift said latch from looking position.

'7. In a locking slider for separable fasteners comprising a slider body having diverging channels for the passage of fastening elements longitudinally therethrough, a locking member pivotally supported upon one wall of the slider to swing only in a direction perpendicular to the longitudinal axis of said slider and across the path of movement of the fastener elements through the channels thereof, a latch extending from said member into a channel of the slider transversely across the path of movement of the fastening elements through said channels to lock the slider against accidental movement on said the latch in means cooperating with said member to lift the latch from locking position, and a housing arranged upon and keyed and secured to said wall ofthe slider for concealing the same against displacement from the'slider.

8. In a lock slider for separable fasteners comprising a channeled body for the passage of fastening elements through the channel thereof, an elongated hood arranged upon one outer surface of a wall of the slider centrally and longitudinal,- ly thereof, means keying and securing the hood to the slider wall, a locking member arranged between the slider wall and said hood and mounted for free swinging movement only in a direction perpendicular to the longitudinal axis of said hood and slider, a latch extending from one side [0 of said member and outwardly through one side of said hood to enter the channel of said slider body across the path of movement of the fastening elements through said channel to lock the slider, tensional means between the hood and said member normally urging the latch in locked position, and means slidably coupled with said hood and cooperating with said member to lift the latch from looking position.

LOUIS H. MORIN.

DAVIS MARINSKY. 

